diff --git a/1-js/02-first-steps/11-logical-operators/1-alert-null-2-undefined/solution.md b/1-js/02-first-steps/11-logical-operators/1-alert-null-2-undefined/solution.md
@@ -1,4 +1,4 @@
-The answer is `2`, that's the first truthy value.

```js run
alert( null || 2 || undefined );

diff --git a/1-js/02-first-steps/11-logical-operators/1-alert-null-2-undefined/task.md b/1-js/02-first-steps/11-logical-operators/1-alert-null-2-undefined/task.md
@@ -2,9 +2,9 @@ importance: 5

---

-# What's the result of OR?

-What is the code below going to output?

```js
alert( null || 2 || undefined );

diff --git a/1-js/02-first-steps/11-logical-operators/2-alert-or/solution.md b/1-js/02-first-steps/11-logical-operators/2-alert-or/solution.md
@@ -1,13 +1,13 @@
-The answer: first `1`, then `2`.

```js run
alert( alert(1) || 2 || alert(3) );
```

-The call to `alert` does not return a value. Or, in other words, it returns `undefined`.

-1. The first OR `||` evaluates its left operand `alert(1)`. That shows the first message with `1`.
-2. The `alert` returns `undefined`, so OR goes on to the second operand searching for a truthy value.
-3. The second operand `2` is truthy, so the execution is halted, `2` is returned and then shown by the outer alert.

-There will be no `3`, because the evaluation does not reach `alert(3)`.
diff --git a/1-js/02-first-steps/11-logical-operators/2-alert-or/task.md b/1-js/02-first-steps/11-logical-operators/2-alert-or/task.md
@@ -2,9 +2,9 @@ importance: 3

---

-# What's the result of OR'ed alerts?

-What will the code below output?

```js
alert( alert(1) || 2 || alert(3) );

diff --git a/1-js/02-first-steps/11-logical-operators/3-alert-1-null-2/task.md b/1-js/02-first-steps/11-logical-operators/3-alert-1-null-2/task.md
@@ -2,9 +2,9 @@ importance: 5

---

-# What is the result of AND?

-What is this code going to show?

```js
alert( 1 && null && 2 );

diff --git a/1-js/02-first-steps/11-logical-operators/4-alert-and/task.md b/1-js/02-first-steps/11-logical-operators/4-alert-and/task.md
@@ -2,9 +2,9 @@ importance: 3

---

-# What is the result of AND'ed alerts?

-What will this code show?

```js
alert( alert(1) && alert(2) );

diff --git a/1-js/02-first-steps/11-logical-operators/5-alert-and-or/solution.md b/1-js/02-first-steps/11-logical-operators/5-alert-and-or/solution.md
@@ -1,16 +1,16 @@
-The answer: `3`.

```js run
alert( null || 2 && 3 || 4 );
```

-The precedence of AND `&&` is higher than `||`, so it executes first.

-The result of `2 && 3 = 3`, so the expression becomes:

```
null || 3 || 4
```

-Now the result is the first truthy value: `3`.

diff --git a/1-js/02-first-steps/11-logical-operators/5-alert-and-or/task.md b/1-js/02-first-steps/11-logical-operators/5-alert-and-or/task.md
@@ -2,9 +2,9 @@ importance: 5

---

-# The result of OR AND OR

-What will the result be?

```js
alert( null || 2 && 3 || 4 );

diff --git a/1-js/02-first-steps/11-logical-operators/6-check-if-in-range/task.md b/1-js/02-first-steps/11-logical-operators/6-check-if-in-range/task.md
@@ -2,8 +2,8 @@ importance: 3

---

-# Check the range between

-Write an `if` condition to check that `age` is between `14` and `90` inclusively.

-"Inclusively" means that `age` can reach the edges `14` or `90`.
diff --git a/1-js/02-first-steps/11-logical-operators/7-check-if-out-range/task.md b/1-js/02-first-steps/11-logical-operators/7-check-if-out-range/task.md
@@ -2,8 +2,8 @@ importance: 3

---

-# Check the range outside

-Write an `if` condition to check that `age` is NOT between `14` and `90` inclusively.

-Create two variants: the first one using NOT `!`, the second one -- without it.
diff --git a/1-js/02-first-steps/11-logical-operators/8-if-question/solution.md b/1-js/02-first-steps/11-logical-operators/8-if-question/solution.md
@@ -1,19 +1,19 @@
-The answer: the first and the third will execute.

-Details:

```js run
-// Runs.
-// The result of -1 || 0 = -1, truthy
if (-1 || 0) alert( 'first' );

-// Doesn't run
// -1 && 0 = 0, falsy
if (-1 && 0) alert( 'second' );

-// Executes
-// Operator && has a higher precedence than ||
-// so -1 && 1 executes first, giving us the chain:
// null || -1 && 1  ->  null || 1  ->  1
if (null || -1 && 1) alert( 'third' );
```

diff --git a/1-js/02-first-steps/11-logical-operators/8-if-question/task.md b/1-js/02-first-steps/11-logical-operators/8-if-question/task.md
@@ -2,11 +2,11 @@ importance: 5

---

-# A question about "if"

-Which of these `alert`s are going to execute?

-What will the results of the expressions be inside `if(...)`?

```js
if (-1 || 0) alert( 'first' );
-Original file line number
+Diff line change
@@ Expand Up / @@ -2,9 +2,9 @@ importance: 5 @@
     ---
-    # What's the result of OR?
-    What is the code below going to output?
     ```js
     alert( null || 2 || undefined );
@@ Expand Down @@